Pith Number

pith:VDPPAXYK

pith:2015:VDPPAXYKJNCNAKNQ5XIOJBBD7G

not attested not anchored not stored refs pending

Computability on the space of countable ordinals

Arno Pauly

arxiv:1501.00386 v3 · 2015-01-02 · cs.LO · math.GN

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VDPPAXYKJNCNAKNQ5XIOJBBD7G}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:46:49.880387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8def05f0a4b44d029b0edd0e48423f9a36ca2d9725d8e940596e8550b4e8bfb

Aliases

arxiv: 1501.00386 · arxiv_version: 1501.00386v3 · doi: 10.48550/arxiv.1501.00386 · pith_short_12: VDPPAXYKJNCN · pith_short_16: VDPPAXYKJNCNAKNQ · pith_short_8: VDPPAXYK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/VDPPAXYKJNCNAKNQ5XIOJBBD7G \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a8def05f0a4b44d029b0edd0e48423f9a36ca2d9725d8e940596e8550b4e8bfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0dfb0223e9e3802ee23336cfe9c338affaaafc1baef66718068c8bc96ea81de",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-01-02T11:32:12Z",
    "title_canon_sha256": "ccedf4b32a818652da01c2bf91a1dc799b062c930bc3ef27e23e539922463693"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.00386",
    "kind": "arxiv",
    "version": 3
  }
}